Read Sharp LC-65XS1E (serv.man4) Service Manual online
LC-52XS1E/RU/LC-65XS1E/RU
4 – 4
[3] Backlight POWER Check (details)
1. SUB-POWER-UNIT (1/2/3) (Backlight POWER) power supply input
• • • AC1, AC2, AC3terminal • • • He is 220VAC.
2. SUB-POWER-UNIT (Backlight POWER) Power supply output
• • • LA1/2/3terminal, PS1/2/3 terminal is as follows.
SUB-POWER-UNIT (1/2/3)
3. The input-and-output power supply of POWER-DISTRIBUTION-UNIT
• • • The voltage of LA1/2/3, CN4, CN1-CN8 terminal is as follows.
POWER-DISTRIBUTION-UNIT
BACK LIGHT POWER FAILURE
1pin
2pin
3pin
4pin
5pin
6pin
7pin
8pin
9pin
10pin
LA1/LA2
27V
27V
G
G
20V
20V
G
G
G
—
52/65
LA3
27V
27V
27V
G
G
G
20V
20V
G
G
65
1pin
2pin
3pin
4pin
5pin
6pin
7pin
8pin
9pin
10pin
11pin
PS1
BU5V
BU5V
LED_ON
OVP
G
27V
20V
G
27V
20V
G
52/65
PS2
BU5V
LED_ON
OVP
27V
20V
G
—
—
—
—
—
52/65
PS3
BU5V
LED_ON
OVP
27V
20V
G
—
—
—
—
—
65
1pin
2pin
3pin
4pin
5pin
6pin
7pin
8pin
LA1/LA2
CN1/2
27V
27V
G
G
20V
20V
G
G
52/65
LA3
CN3
27V
27V
27V
G
G
G
20V
20V
65
1pin
2pin
3pin
4pin
5pin
6pin
7pin
8pin
9pin
10pin
11pin
12pin
13pin
14pin
CN4
20V_
R
20V_
R
20V_
R
20V_
R
20V_
R
G
G
27V_G
B
27V_G
B
27V_G
B
27V_G
B
27V_G
B
27V_G
B
27V_G
B
52/65
15pin
16pin
17pin
18pin
19pin
20pin
21pin
22pin
23pin
G
G
G
G
G
G
G
G
G
52/65
1pin
2pin
3pin
4pin
5pin
6pin
CN1
20V_R
G
G
G
27V_G
27V_B
POWER-DISTRIBUTION-UNIT1
52/65
CN2
20V_R
G
G
G
27V_G
27V_B
POWER-DISTRIBUTION-UNIT1
52/65
CN3
20V_R
G
G
G
27V_G
27V_B
POWER-DISTRIBUTION-UNIT1
52/65
CN5
20V_R
G
G
G
27V_G
27V_B
52/65
• • •
20V_R
G
G
G
27V_G
27V_B
• • •
CN7
20V_R
G
G
G
27V_G
27V_B
52/65
CN8
20V_R
G
G
G
27V_G
27V_B
65
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